I doubt a website was asked to ban someone and if it happened then the website has no credibility.
True story about Herd Nation: years ago, under previous ownership, I posted a comment that was critical of IMG. It wasn't just the typical "the scoreboard's too loud," it was some pretty real stuff about the way they did business at the time. I'm not a
total idiot, so I made sure to avoid disclosing anything that would make it obvious who I was, but IMG managed to find out, presumably because the site disclosed my personal information. A former IMG employee who is no longer at Marshall contacted my boss and made the case that I be fired (I wasn't).
The moral of the story is that you have to be wary of the fact that there are relationships between the folks who run these boards and the people who work in the athletic department. It's not necessarily nefarious - the site moderators have to have these relationships in order to generate the content they put up on their boards, and the AD/IMG employees are required by their jobs to try to manage relationships with third parties, like the press and message board operators. Still, never assume you have complete anonymity here, or that Marshall can't find out who you are if they want to.